Flora of Victoria

Tufted perennial with very short thick rhizome, often apparently annual. Culms triquetrous, smooth, slightly swollen at base, mostly 20–60 cm high, 1–3 mm diam. Leaves not septate-nodulose, shorter or longer than culms, 2–6 mm wide. Inflorescence simple or compound with 2–7 branches to 10 cm long, or head-like; spikes dense, broad-cylindric to hemispherical, 1–5 cm diam.; involucral bracts leaf-like, 2 or 3 longer than inflorescence. Spikelets flattened, numerous per spike, 10–28 mm long, 1–2 mm wide in side view, 8–24-flowered; rachilla winged, persistent; glumes acute, with sides 3–4-nerved, red-brown, c. 4 mm long; stamens 3; style 3-fid. Nut trigonous, narrow-obovoid, dark brown to black, c. one half as long as glume, c. 1.5 mm long, c. 0.6 mm diam. Flowers spring–summer.

*CVU, *EGL, *EGU, *GipP, *Gold, *HNF, *HSF, *OtP, *VRiv, *VVP. Also WA, SA, NSW, ACT, Tas. Native to southern Africa. Weed by roadsides and in damp ground.

Source: Wilson, K.L. (1994). Cyperaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 2, Ferns and Allied Plants, Conifers and Monocotyledons. Inkata Press, Melbourne.

Updated by: Val Stajsic, 2018-01-29

life Life

kingdom Plantae

phylum Tracheophyta

class Magnoliopsida

superorder Lilianae

order Poales

family Cyperaceae

genus Cyperus

Higher taxa

species Cyperus congestus Vahl

Victoria

**Source:** AVH (2014). *Australia's Virtual Herbarium*, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Cyperus congestus in AVH ; *Victorian Biodiversity Atlas*, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Cyperus congestus in Victorian Biodiversity Atlas

Bioregion	Occurrence status	Establishment means
Victorian Volcanic Plain	present	naturalised
Victorian Riverina	present	naturalised
Gippsland Plain	present	naturalised
Otway Plain	present	naturalised
Goldfields	present	naturalised
Central Victorian Uplands	present	naturalised
East Gippsland Lowlands	present	introduced
East Gippsland Uplands	present	introduced
Highlands-Southern Fall	present	naturalised
Highlands-Northern Fall	present	naturalised

Bioregions of Victoria

State distribution

State
Western Australia
South Australia
Queensland
New South Wales
Australian Capital Territory
Victoria
Tasmania

Cyperus congestus Vahl

Dense Flat-sedge

Victoria

State distribution